Hehe, of course the Boomkin can't tank. Probably about the same level of squishiness as the Shaman, but doesn't put out the same DPS. He's really the weak link of the group DPS wise, but does provide some utility that another Shaman wouldn't.

Do you run one as resto in your setup? I'm considering plugging in my paladin for PVE, but it's such a pain to gear a tank well enough for heroics.